Washington, D.C.-based startup Contactually has secured $1 million in a seed funding round led by Point Nine Capital and Boston Seed Capital, with participation from prior backers 500 Startups and a group of unnamed angel investors.

Based on the idea that a lot of businesses are dependent on professional relationships with others, Contactually has built a product that automatically manages contacts and prompts users to take certain actions when relevant.

The company’s platform instantly generates a cloud-based address book based on the people a user tends to communicate with via email and various social media services, and then prompts them to reconnect with their most important contacts when it matters the most.

Contactually plans to use the fresh capital to grow and scale its sales and development teams.

Contactually also integrates with tools like Salesforce / Do.com, Google Contacts, Highrise, Pipedrive, SugarCRM and MailChimp, the startup says it intends to focus heavily on partnerships with other complementary SaaS companies and promote the use of its API.

Contactually co-founder and COO Tony Cappaert is particularly giddy about that part of the story:

“We’re really excited to launch our new API. Everything you see in Contactually is now accessible externally, and we’re already seeing a lot of innovation from our current partners.

Other companies and developers shouldn’t have to worry about building out a contact manager, because Contactually can automatically organize and sync contacts for their app from anywhere.”

Contactually was founded in 2011 by Cappaert, Zvi Band and Jeff Carbonella. The team was previously part of the 500 Startups incubator in Mountain View, California.